Thank you for the fast reply simon,i am going to let the battery drain,just to make sure i got it right,i just do a normal dfu restore from itunes when i plug it in? i got the ipad baseband on at the moment,should i downgrade or just leave everthing alone?
Many thanks

i hope you try to downgrade from that ipad baseband. try to do that first. then create a cfw for 5.1.1 (stich your shsh blobs into a 5.1.1 ipsw using redsn0w). i don't know why, but sometimes the apple servers will only accept a cfw from some computers even though that os version is still being signed. anyway, once you've placed your phone in pwned dfu, option restore your phone using the 5.1.1 cfw. i hope this helps. it certainly won't hurt to try.

Well, it technically wasnt boot loop. He said the phone was showing up normally in itunes but the screen just showed the apple logo. Thats what tipped me to needing the battery drain trick, have come across the same issue myself once.

Same issue as that other thread we helped in with the battery drain. Needed to be reset. Most likely caused by choosing the wrong device or bootrom when using redsnow (or something similar). Or the old spirit2pwn thing. There are a few things jailbreak related when used wrong that can lead to this type of thing happening.

I see. Usually error 28 tips me off for the battery drain. Never seen a restore succeed but still sticks to the apple logo. Would have never thought to reset via battery drain in this case. Glad I dragged your name in here to solve this lol.

Huge thanks to i.annie and simon,this thread got my phone working like a dream and i don' think i could have done it without them!

Sadly the phone crashed at work today and its back to the apple logo,i think its time for a new battery!
Sorry to bump the thread but does it sound like the battery? or should i just sell it for parts?